B21D 53/22
With means for preventing rotation
Official title: with means for preventing rotation
B21D53/22 (With means for preventing rotation) appears on 7 US grants and 11 published applications in this corpus.
Search patents in B21D- Granted patents
- 7
- Published applications
- 11
- Assignees
- 6
- Inventors
- 11
- Latest grant
- 15 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 1 | 1 |
| 2010 | 0 | 2 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Self-controllable load spring washer15 Apr 2025US 12,274,862 B2Becton, Dickinson and Company
- Wedge locking washer with increased corrosion resistance and method for its manufacture17 Dec 2019US 10,508,679 B2Nord-Lock AB
- Method and a device for the manufacturing of washers for locking and washer for locking2 May 2017US 9,636,738 B2Nord-Lock AB
- Method and a device for the manufacturing of washers and washer for a locking system2 Aug 2011US 7,987,691 B2Nord-Lock AB
- Method for producing hexagonal washer24 Nov 2009US 7,621,168 B2Tech Stell Co., Ltd.
- Self-Controllable Load Spring Washer26 Jun 2025US 2025/0205428 A1Becton, Dickinson and Company
- Method and a Device for the Manufacturing of Washers for Locking and Washer for Locking21 Jul 2022US 2022/0226879 A1Nord-Lock AB
- Self-Controllable Load Spring Washer14 Jan 2021US 2021/0008282 A1Becton, Dickinson and Company
- Wedge locking washer with increased corrosion resistance and method for its manufacture25 Jan 2018US 2018/0023614 A1Nord-Lock AB
- Method and a device for the manufacturing of washers for locking and washer for locking14 Sep 2017US 2017/0259323 A1Nord-Lock AB
Most cited
By later US patents
- Method of producing semicircular washers having a projection to prevent rotation42US 4,310,939 ADaido Metal Company Ltd. · 1982
- Method for producing circular washer7US 7,331,874 B2Tech Stell Co., Ltd. · 2008
- Method and a device for the manufacturing of washers for locking and washer for locking4US 9,636,738 B2Nord-Lock AB · 2017
- Wedge locking washer with increased corrosion resistance and method for its manufacture2US 10,508,679 B2Nord-Lock AB · 2019
- Method and a device for the manufacturing of washers and washer for a locking system2US 7,987,691 B2Nord-Lock AB · 2011